2391994043059 has 2 divisors, whose sum is σ = 2391994043060. Its totient is φ = 2391994043058.

The previous prime is 2391994043051. The next prime is 2391994043071. The reversal of 2391994043059 is 9503404991932.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2391994043059 - 2³ = 2391994043051 is a prime.

It is a super-2 number, since 2×2391994043059² (a number of 26 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2391994042994 and 2391994043012.

It is not a weakly prime, because it can be changed into another prime (2391994043051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1195997021529 + 1195997021530.

It is an arithmetic number, because the mean of its divisors is an integer number (1195997021530).

Almost surely, 2^{2391994043059} is an apocalyptic number.

2391994043059 is a deficient number, since it is larger than the sum of its proper divisors (1).

2391994043059 is an equidigital number, since it uses as much as digits as its factorization.

2391994043059 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9447840, while the sum is 58.

The spelling of 2391994043059 in words is "two trillion, three hundred ninety-one billion, nine hundred ninety-four million, forty-three thousand, fifty-nine".